HT CTC

Hand Taps for Steel Conduit Threads

Specification

■ Tap for steel conduit threads. Thread angle is 80 degree and the thread symbol is CTC.

Recommended Tapping Speeds depending on Materials

Low carbon steels Medium carbon steels High carbon steels

低炭素鋼10中炭素鋼10高炭素鋼10
(m/min)(m/min)( m/ min)

TYPE:1

Segment:1A

SizeCodeChamferBasic major dia (mm)L (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)No. of flutesTYPEMSRP
For SteelConduit Threads
CTC19-16TYCC190HEB55P19.10010523-5015121541¥ 14,500 □
CTC25-16TYCC250HEB55P25.40012524-5819151841¥ 31,700 □
CTC31-16TYCC310HEB55P31.80014526-6724192241¥ 45,800 □
CTC39-16TYCC390HEB55P38.10016527-7630232641¥ 61,100 □
■For SteelConduit Threads unit: mm
SizePitch Diameter Basic SizeMinor Diameter Basic Size
CTC 19 - 1618.34317.708
CTC 25 - 1624.64324.008
CTC 31 - 1631.04330.408
CTC 39 - 1637.34336.708
oreoe szeunit: mm
SizeMinor Diameter of I Max.nternal Thread(D1 Min.)Bored Hole Size (Reference)
CTC 19 -1618.20817.80818.11
CTC 25 -1624.50824.10824.41
CTC 31 -1630.90830.50830.81
CTC 39 -1637.20836.80837.11